What are the main features of the troposphere?

Quick Answer. The troposphere is the lowest layer of Earth's atmosphere, which contains almost all of the weather, 99 percent of the water vapor and as much as 80 percent of the atmosphere's mass. The troposphere is 12 miles thick at the equator and four miles thick at the poles. read more

Learn the definition of the troposphere and its role in Earth's atmosphere. Understand the characteristics associated with it, and appreciate its importance to Earth. read more

The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer. The bottom of the troposphere is at Earth's surface. read more